Improvement in hay and grain elevators



T.- PUWELL.

Hay and Grain Elevator.

I A l l llll .lll

I i i I y l i UNITED STATES PATENrQFFlGn THOMAS POWELL, OF STOOKTON, CALIFORNIA.

IMPROVEMENT IN HAV AND GRAIN ELEVATORS.

Specification forming part of Letters Patent N0. 162,307, dated April 20, 1875; application filed September 26, 1874.

To all whom t may concern Be it known that I, THOMAS POWELL, of Stockton, in the county of San Joaquin and State of California, have invented a new and Improved Hay and Grain Unloader, of which the following is a specification The invention will tirst be fully described, and then pointed out in the claiin.

Figure l is a plan view ot' my improved unloading-sling as when spread out for receiving the load. Fig. 2 is a side view of the sling as when suspended by the derrick. Fig'. 3 is a side elevation of one ot' the stretcher-bars, by which the two parts are hooked together and Fig. 4 is a cross-section of the said stretcherbars. Fig. 5 is a detail, showing the bellcrank locking device; and Fig. 6 is a detail, showing a spring locking` device.

Similar letters ot' reference indicate corresponding parts.

A represents two sections ot' netting, canvas, leather, or other material suitable for a kind of sling, by which to elevate hay or the short straw, heads, and grain from the headerwagon, the netting` or canvas being attached to stretchers of wood B and O. The stretchers B connect the sections together by the hooks E and eyes D 5 also, by the revolving hook F, when that form of locking device is to be used, the hooks E being arranged so as to escape easily from the eyes when not fastened or locked in them, and the hook F being arranged to revolve and swing into a hook, E, in place of one of the eyes, after the other hooks have engaged the eyes, and, by engaging in a contrary Wayto the other hooks, locking the two sections together, so that they cannot disconnect until released. The hook F has a crank, G, for turning it by atrip-eord` H, for unlocking' the sling. This crank is held fast by a spring-catch, I, until it is required to unlock it.

Instead of the revolving hook a bell-crank, a, may be used, acting' on the stud b, and having a spring-catch, d, for holding it, said catch having the trip cord connected to it for releasing the crank when the sling is to be unl'astcned; and, instead of either, a spring catch, e, may be used with the stud b. The stretch ers O have cords J connected to them, which center in a ring, K, by which the sling is hooked onto the chain L of a hoisting-derrick of any suitable kind.

The sling will be spread upon the bed ot' the wagon to be loaded, with the ends so disposed tl1at they can be connected to the derrick-hook, in themannerindicated inFig. 2, when the load is to be removed. After the load is removed andlaid on the stack the two parts ot the sling will be unlocked by the tripcord H, so as to disconnect and pull out from under the load, and leave it when the derrick-chain is hoisted.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The sections A A, provided with hooks and eyes D E and swivel-hook F, having crank G, catch I, and trip-cord H, all arranged as shown and described.

THOMAS POWELL.

Witnesses:

W. J. WILLIS, H. DAvIs. 

